<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .ui-dialog {
            width: 33%;
            height: auto;
            display: none;
            position: absolute;
            z-index: 90000;
            top: 0px;
            left: 0px;
            border: 1px solid #D5D5D5;
            background: #fff;
        }

        .ui-dialog a {
            text-decoration: none;
        }

        .ui-dialog-title {
            height: 48px;
            line-height: 48px;
            padding: 0px 20px;
            color: #535353;
            font-size: 16px;
            border-bottom: 1px solid #efefef;
            background: #f5f5f5;
            cursor: move;
            user-select: none;
        }

        .ui-dialog-closebutton {
            width: 16px;
            height: 16px;
            display: block;
            position: absolute;
            top: 12px;
            right: 20px;
            background: url(/static/images/close_def.png) no-repeat;
            cursor: pointer;
        }

        .ui-dialog-closebutton:hover {
            background: url(../../static/images/close_hov.png);
        }

        .ui-dialog-content {
            padding: 15px 20px;
        }

        .ui-dialog-pt15 {
            padding-top: 15px;
        }

        .ui-dialog-l40 {
            height: 40px;
            line-height: 40px;
            text-align: right;
        }

        .ui-dialog-input {
            width: 100%;
            height: 40px;
            margin: 0px;
            padding: 0px;
            border: 1px solid #d5d5d5;
            font-size: 16px;
            color: #c1c1c1;
            text-indent: 25px;
            outline: none;
        }

        .ui-dialog-input-username {
            background: url(../../static/images/input_username.png) no-repeat 2px;
        }

        .ui-dialog-input-password {
            background: url(../../static/images/input_password.png) no-repeat 2px;
        }

        .ui-dialog-submit {
            width: 100%;
            height: 50px;
            background: #3b7ae3;
            border: none;
            font-size: 16px;
            color: #fff;
            outline: none;
            text-decoration: none;
            display: block;
            text-align: center;
            line-height: 50px;
        }

        .ui-dialog-submit:hover {
            background: #3f81b0;
        }

        .ui-mask {
            width: 100%;
            height: 100%;
            background: #000;
            position: absolute;
            top: 0px;
            height: 0px;
            z-index: 8000;
            opacity: 0.4;
            filter: Alpha(opacity=40);
        }
    </style>
</head>
<body>

<img src="/static/images/input_username.png" onmousemove="showDialog();">
<div class="htmleaf-container">
    <header class="htmleaf-header">
        <!--<h1>纯js点击按钮弹出登录对话框特效</h1>-->

    </header>
    <!--
    <div class="htmleaf-demo center">-->
    <!-- <a href="javascript:showDialog()" class="current">立刻登录</a>-->
    <!--</div>-->
    <iframe frameborder="no" border="0" marginwidth="0" marginheight="0" width=100% height=86
            src="http://music.163.com/outchain/player?type=2&id=299757&auto=1&height=66"></iframe>
    <iframe src="http://music.163.com/outchain/player?type=0&amp;id=34238509&amp;auto=0&amp;height=430" width="100%"
            height="450" frameborder="no" marginwidth="0" marginheight="0"></iframe>
</div>
<div class="ui-mask" id="mask" onselectstart="return false"></div>
<div class="ui-dialog" id="dialogMove" onselectstart='return false;'>


    <div class="ui-dialog-title" id="dialogDrag" onselectstart="return false;">
        登录通行证789498
        <a class="ui-dialog-closebutton" href="javascript:hideDialog();"></a>
    </div>
    <div class="ui-dialog-content">
        <form id="loginForm" name="TestL" method="post" action="login">
            <div class="ui-dialog-l40 ui-dialog-pt15">
                <input class="ui-dialog-input ui-dialog-input-username" type="input" name="nickName"
                       placeholder="手机/邮箱/用户名"/>
            </div>
            <div class="ui-dialog-l40 ui-dialog-pt15">
                <input class="ui-dialog-input ui-dialog-input-password" type="input" name="passWord" placeholder="密码"/>
            </div>

            <div class="ui-dialog-l40">
                <a href="#">忘记密码</a>
            </div>
            <div>
                <a id="login" class="ui-dialog-submit" href="#javascript;" onclick="submitForm();return false">登录</a>
                <input type="button" value="tj" class="btn2" onclick="submitForm();"/>
            </div>
        </form>
        <div class="ui-dialog-l40">
            <a href="#">立即注册</a>
        </div>

    </div>
</div>

<script type="text/javascript">

    var dialogInstace, onMoveStartId;	//	用于记录当前可拖拽的对象

    // var zIndex = 9000;

    //	获取元素对象
    function g(id) {
        return document.getElementById(id);
    }

    //	自动居中元素（el = Element）
    function autoCenter(el) {
        var bodyW = document.documentElement.clientWidth;
        var bodyH = document.documentElement.clientHeight;

        var elW = el.offsetWidth;
        var elH = el.offsetHeight;

        el.style.left = (bodyW - elW) / 2 + 'px';
        el.style.top = (bodyH - elH) / 2 + 'px';

    }

    //	自动扩展元素到全部显示区域
    function fillToBody(el) {
        el.style.width = document.documentElement.clientWidth + 'px';
        el.style.height = document.documentElement.clientHeight + 'px';
    }

    //	Dialog实例化的方法
    function Dialog(dragId, moveId) {

        var instace = {};

        instace.dragElement = g(dragId);	//	允许执行 拖拽操作 的元素
        instace.moveElement = g(moveId);	//	拖拽操作时，移动的元素

        instace.mouseOffsetLeft = 0;			//	拖拽操作时，移动元素的起始 X 点
        instace.mouseOffsetTop = 0;			//	拖拽操作时，移动元素的起始 Y 点

        instace.dragElement.addEventListener('mousedown', function (e) {

            var e = e || window.event;

            dialogInstace = instace;
            //instace.mouseOffsetLeft = e.pageX - instace.moveElement.offsetLeft ;
            //instace.mouseOffsetTop  = e.pageY - instace.moveElement.offsetTop ;
            instace.mouseOffsetLeft = e.pageX;
            instace.mouseOffsetTop = e.pageY;
            instace.offsetLeft = instace.moveElement.offsetLeft;
            instace.offsetTop = instace.moveElement.offsetTop;
            //		alert(e.pageX+" "+e.pageY+"  "+instace.moveElement.offsetLeft+" "+instace.moveElement.offsetTop);
            // instace.moveElement.style.zIndex = zIndex ++;
        })

        return instace;
    }

    //	在页面中侦听 鼠标弹起事件
    document.onmouseup = function (e) {

        dialogInstace = false;
        clearInterval(onMoveStartId);

    }

    //	在页面中侦听 鼠标移动事件
    document.onmousemove = function (e) {
        var e = e || window.event;
        var instace = dialogInstace;
        if (instace) {

            var maxX = document.documentElement.clientWidth - instace.moveElement.offsetWidth;
            var maxY = document.documentElement.clientHeight - instace.moveElement.offsetHeight;

            //	instace.moveElement.style.left = Math.min( Math.max( ( e.pageX - instace.mouseOffsetLeft) , 0 ) , maxX) + "px";
            //	instace.moveElement.style.top  = Math.min( Math.max( ( e.pageY - instace.mouseOffsetTop ) , 0 ) , maxY) + "px";
            instace.moveElement.style.left = Math.min(Math.max((e.pageX - instace.mouseOffsetLeft + instace.offsetLeft), 0), maxX) + "px";
            instace.moveElement.style.top = Math.min(Math.max((e.pageY - instace.mouseOffsetTop + instace.offsetTop), 0), maxY) + "px";
        }
        if (e.stopPropagation) {
            e.stopPropagation();
        } else {
            e.cancelBubble = true;
        }
    };

    //	拖拽对话框实例对象
    Dialog('dialogDrag', 'dialogMove');

    function onMoveStart() {

    }


    //	重新调整对话框的位置和遮罩，并且展现
    function showDialog() {
        g('dialogMove').style.display = 'block';
        g('mask').style.display = 'block';
        autoCenter(g('dialogMove'));
        fillToBody(g('mask'));
    }

    //	关闭对话框
    function hideDialog() {
        g('dialogMove').style.display = 'none';
        g('mask').style.display = 'none';
    }

    //	侦听浏览器窗口大小变化
    //window.onresize = showDialog;
    showDialog();

    function submitForm() {
        document.getElementById("loginForm").submit();
    }
</script>
</body>
</html>